When attempting to submit payment through an Event Registration form (non classic) Part or Form that is using the Payment 2.0 Part, users may receive the error message:
The Page at https://payments.blackbaud.com says: Transaction Declined
This message may appear after multiple charge attempts are made with invalid credit card information. The error may indicate the IP that the attempted charges are originating from has been blacklisted.
If failed attempts cease, the IP address may be allowed to make donations again after a short amount of time, typically 1-2 days. If the error is persistent, click Chat with Support, reference this article, and provide the IP address of the donor in question.